Optical Feedback Sensitivity of a Semiconductor Ring Laser with Tunable Directionality

Photonics

Guy Van der Sande¹  Guy Verschaffelt¹  Mulham Khoder² 

[1] Applied Physics research group (APHY), Department of Applied Physics and Photonics, Vrije Universiteit Brussel, 1050 Brussels, Belgium;Brussels Photonics (B-PHOT), Department of Applied Physics and Photonics, Vrije Universiteit Brussel, 1050 Brussels, Belgium;

关键词: semiconductor ring laser;    optical feedback;    laser stability;   

DOI  :  10.3390/photonics6040112

来源: DOAJ

【 摘 要 】

We discuss the sensitivity to optical feedback of a semiconductor ring laser that is made to emit in a single-longitudinal mode by applying on-chip filtered optical feedback in one of the directional modes. The device is fabricated on a generic photonics integration platform using standard components. By varying the filtered feedback strength, we can tune the wavelength and directionality of the laser. Beside this, filtered optical feedback results in a limited reduction of the sensitivity for optical feedback from an off-chip optical reflection when the laser is operating in the unidirectional regime.

【 授权许可】

Unknown